<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width,initial-scale=1.0,maximum-scale=1.0,minimum-scale=1.0,user-scalable=0">
    <title>Title</title>
</head>
<style>
    *{
        margin: 0;
        padding: 0;
    }
    div{
        width: 300px;
        height: 300px;
        background-color: pink;
    }
</style>
<body>
<div></div>


</body>
</html>